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Caledonite and Gahnite Physical Properties


Gahnite and Caledonite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
5.6-5.76   
4.00-4.62   

Fracture
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)   
Conchoidal, Uneven   

Cleavage
[001] perfect; [100] distinct   
Indistinct parting on [111]   

Mohs Hardness
2.5-3   
7.5-8   

Chemical Composition
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)   
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Caledonite and Gahnite Chemical Formula

While comparing Caledonite and Gahnite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Caledonite and Gahnite chemical formula.

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Caledonite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Caledonite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Caledonite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Caledonite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.

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